[artie_effim]

We still refer to cat food as 'cat fud' in my house.

[codeulike]

Yes! I always write it like that on shopping lists now

https://twitter.com/jamiesmart/status/1691482826472828928

[thebruce87m]

“Fud” means something very different in Scotland. It used to be a common derogatory term.

https://en.m.wiktionary.org/wiki/fud

[m463]

It was also used microsoft to great effect.

https://en.wikipedia.org/wiki/Fear,_uncertainty,_and_doubt

[unethical_ban]

Looks like it is related to futz, how I have heard it "don't futz around with that" with kind of means don't like at it because you'll break it.